Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce01d7cad8cd929103334589f3d782700cd1c86480583e5e08ca4d2898a3d799' 
  AND token = 'k7euh6vEiiy0lulFNdICjRcKY7kuHHQJdtryJq5inRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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