Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c6d26dd841f1ac0d67beef63972d6df4827cdc15819d4c0037e511423178e19' 
  AND token = 'Z6Nr+JATGHT3HdZQFT4ujdOqGAFHULQ7XLITi/sWkx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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