Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6afcaf830afa7fc9f8a626d9e9e57800a011a83a249c577a299143182cff2706' 
  AND token = 'pzHeN3gWrryfrgWdFKRN2GTeMAg3o/JFAGAaGIf0OGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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