SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65037f8aa565bd5052f2b9538e063defec11056eb46794bdc4f39fc06f413174' 
  AND token = 'orZmQc7Y8WIVjvg6t3u7EHkVzhfA9RJd0FQP6nO7GHw=' 
  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"
    }
  }
}