Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7874e961bcf388086a421476ceeeafa1c09897fba1f5fcf31f2d0d70a4347121' 
  AND token = 'e7+zHcfYOQ/I4nDDlCtbXOSOBLHIsIXw89beYtpalqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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