Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f03c2c1afd11457c8690be502bedfec0b6a033ec9f7b792a1a5bc46f05c28b83' 
  AND token = 'v9F1qn51fqnTYxy4838mkCN+79Vq8TUf/pkAScEMDEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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