Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a217cf90c3a18104416a77ea2ba42a72e44420350c999798af4ceb189cc1a291' 
  AND token = 'FdERD4X85IJfe5ro5WaaSxnL7MaoVDHl38gs9FNbPA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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