Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23645d0fd2abf9f1fe7955f1bb2d70ee58ad399d7c7f97efab3702c20ea61729' 
  AND token = 'lYN2QAoX5rjmnsK7JuKdAg0NtKROsXJ7xL+4HzMWtho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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