Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1a9ea30f66ef3128b6874cca9601bf5d6a8eb685404e6e28c510deccff0e2a70' 
  AND token = '8bXy+UK0tlBF6GYmnCPHnx9uGBsFYrCdf8QNRDUgcb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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