SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4fbf742b06ff71c9583b49c6fd62f35bb8e3d95c625c2a15ffd40494b73c9f4b' 
  AND token = 'yM533rXu8KjJSUWsclgumzQ2/37vUHrnOZXtFGdlhEk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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