Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c018bad9fb7812f40c4449a924a79041be541dbdf7a4c04e6118db85b120a3b9' 
  AND token = 'nOc770nqiI0D/05RrpOxu46VX70EJaKjmPFY8rz/9a0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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