Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae9a3a4b3cfd063a2836881f6a9009a295ba3aa47825057ab8ba056f86bd9736' 
  AND token = 'XB7heto4MyerBs2oE1j8ip1MoQ9vN9KnT+GLlSghF9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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