Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b0073e12bb933c9983f2487bdfca86dc88fe9b272ac037bc348a2bbb09e2a602' 
  AND token = 'iPuKh5l/bxF2esAZJCPDkFFVQ2o1E2gapXDVoI+oSC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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