Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f6536bc0cdcf032b9aee375e8100f51daa322edf64049d5920d42c1127075032' 
  AND token = 'SeHIkJcHSYuFmEFf9Dgsm+9eFVq4e3A9MBaGS29I2cI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}