Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3da3159f607c6930d15dcdcac63874019a39ee9f0ddbbd59bcdcd2edc12fc196' 
  AND token = 'Hcx3N2OeTc2moXzJjiwzfAGx426BOCkD0FKoNOV/+xk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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