Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '001e3102dcc58057bd32f244195832c1c16abc02798a19c0f6edbcb883b03273' 
  AND token = '2QZ0KdEKQ3GTpM0M/dosVzIats6+2jMdNq8VC5Iz4bw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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