Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8cc0567f207c567066a3630b8c0d07d128128ca09107875af70dc1e61834ee5' 
  AND token = '3bie5R4gM1uCBqYCeDEw5952uCHEIJ5XvO6vyrK10Ls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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