Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '078fc9657b960cc8c06d8378625c6b6ca847ce4569a2b324ec199f7e6729c282' 
  AND token = 'p3F+/LDFeQaCdH8KbwMnVRZTiPhN5iovrVTm4SmHxXs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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