Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65e146b118b10fbcc09a70d2630c46823c7c4ae9ea41206a940d23b4555be819' 
  AND token = 'FO6P0WK6DZY/yFI09wm1lM42b94R8AWGM0N75IJ+KMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}