Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e84a95c11e2e228f583785b7497c99c322092e6163b6b327322aa1338a9995d8' 
  AND token = 'FaKbuXhX/uBUqxgzpBB2fNJSpqtWCgFdtBNnNngAbbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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