Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1f4344f78b2da43f60aaa8188476e234ab92a14ae90da4f28498571e1062025a' 
  AND token = 'GeWA+NQ/z9loUzth/ppyNSlHB05xQFVCd3culjdJIaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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