Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe1381cad9c5e6bce224bea3a17ca83807d7dec94b87613251cd6613475f009a' 
  AND token = 'vt83F3pDRJhrl3oaaA4vyGkGrhBN1+ZPDhluS7ts5II=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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