SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1f6460720fd5349220f89060be956b0bd6188ff3432d4c970a085bbe3fbb4b8b' 
  AND token = 'Awlz+ErxIMWqpp/ZL5GljGIVoBK8aSoxeF30+xr1djo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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