SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'deac30a31a0680a77f9fd5fb4befbd82d6afd77a64e7639fff131c14833d0a8e' 
  AND token = 'iRUYcOkIqOUThZg45wTNJVIPoQ4/KI1lcBpmjkxnsok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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