Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '980fe101b4944387640600209104aa8d46d0d5893542edf62847da98186477f9' 
  AND token = 'UHJv2gW8Q+qNXOtW2EEU6jh2zbjJmcKYs0p6erZ1o5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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