Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0711538b1e3744bba8b4cb126fb9e1d0ef7d0abacd037af91b7bd7dcffab3995' 
  AND token = '8dPrclVvTdlxvi1QCFm/YvnyMSHO+iPbK+2iy/Mm4s8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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