Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a4d1bc5af08d57b5a799b3856642e430b6cab52d31fbd91d038f5a6a28cb852d' 
  AND token = '/mDZrYOk25I3ApTH2s7UF8+Xx7DkLf0HALAY2W6QFXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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