Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9601a366ce2985a1d164fd71e53ca385f18245b10e83e55d1e8278ef3b7e7601' 
  AND token = '64PNoRWBnJB9u7i+CUP8XjMygTUlAxI0vZ7kFvRv6AU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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