Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a4e35d09fdee6a0d43f73c6d7614802136fb8e4827936c30f81f9205b02820e' 
  AND token = '6ucRkBCGff+GxYgYtlaT1u+W3W1/jtn6acwPKHv+KRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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