SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64280c6c62cfc0c95ae33a3e7596fa3157abdb1aa99a1dff73a920ba108a9ec8' 
  AND token = 'qiV7hilo7gQBKoIPvpzFBui4oPPXYoTuRSJruqWWwAU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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