Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97426789beb28a194c953ea59d9ab94a690ccd8ec5c50ba166a63a9257f77c05' 
  AND token = '23jOT88PtjghWwkjKytuv4u6WPxqlTBea5o/HpxN1YM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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