Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cb30efe57d5e5c8f3f5b637d39df32570fd84208f7014d672d55dda828dd595' 
  AND token = 'tTzqvgJkg1N7iJGCs0sqzOZodi3+DtTR2pUNqCpNG3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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