Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ece7a61df2907fdea4129f75cb44966b471517afd5b35eb406f20ad652a3120' 
  AND token = 'vh01lE0TIbb+XQCX5aHX+Z0XE3ouQ4oDQPensldC/kk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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