Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e36e63dce3ec42e11efca70aebca6505ac9f440ae332e8a5bc92ad187380e18d' 
  AND token = 'LbRujxD1I2X8QjsEazZmvTlSRnT5x+rGdSDBQtZ2/o0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00162

JSON explain

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