SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd187f2826b84c46f8a13bbdb2674f3345687f1dd2d77250ec69c4734ba85fee6' 
  AND token = 'UtMZTCKi1ERPLmdMtMHgm1w4Jra5PB9QZzeNN/RUWU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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