SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '14157d3e52d88dd28fc80ec113469792c14a33b84c97fc2e490096d394af6e35' 
  AND token = 'gH5b0KEfjs2jxQYBGLzJizHcgnZxMRaHPqBF2e8/+Qc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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