Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f3ae54029245bb80e992a33cef7b89d1efef91fad22f4d11ec86cd91bf70e637' 
  AND token = 'zFOp9AE7Tl2atFJn8xoe4F5cEQmD1XOm0uU9bbBviFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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