SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '663a6e63164e70cb181edf02fe0ddbdd36d10c71895800fc1dab82d3c916b658' 
  AND token = 'qP6vDVBdfhxMr4FZaMIT+SDjLOzC/vJCt7nPANKcvGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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