Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a009429722bffb508c8904e85205e7924d04e2e30e81448cd1e457f9c76293d9' 
  AND token = 'CemijLQdX3NmQ+WuMlmwUU4EJoIn1a+1ZZ7hw6es8lU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00303

JSON explain

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