Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c0b3cefc94f9208518d160341029d5cad0095b5172e798730e2e4b67befbb98' 
  AND token = 'chlvWzt40sfYmnVeZdBN9gGr39XUZvW8awnRlyBUnH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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