Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c1dcd9aabd11122a4197c568000868834972e170590a7969fc3fef14276d0bd' 
  AND token = 'UGcg8UeyWKiiiH6rePFfDsTi/7utUbWesI07GaVBuPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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