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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66ed30cc23c9210fa103cec64af433feee2583a45d6ad08072ed6ee9bfda3674' 
  AND token = 'tMVdt9Ab2HLasIE6y2g2DfGpQi8EE0ZUJoyuTA8AV2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}