Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f49def395e38a547c8649bfa6bb6d5cacbd6602d242594fc4c380c5eb00be0b3' 
  AND token = 'l+iYvkZmLvjHonKbpMrF1+bqlqZp4UXTrNA65FlSOZk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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