Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9130f5306fcf5106b3bbb91390ce3a3e580a1c9917d37c252d639c9945b3d24e' 
  AND token = 'uk6Z64ToBN5c2Tj4Ts2BKxScHn5O4qwOXP9lBSYDEJQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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