Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2bbec107cc797fb74b9f0a98008ebd7902e0396430805316a50cfea7a95f1b47' 
  AND token = '+//X+xcI4sPSZ0imNbeRXTybzYcXlCNWNQr+U4SJUt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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