Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc3d42c3719276bd0ca64faf8c6b025842abda5283b9f314394c24c9770b443' 
  AND token = 'BW75lC78ZRFqJ4x2imkhZVz6I1qP5p2O/1etre737Gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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