Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12526a82a403b07274e2f243b4026b49fe3f79367491675bc9c9c14924c7feb1' 
  AND token = 'ESdyKjRuhIRfp2UYrjD1R6oTKmXnKg7/U61je8VCEIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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