SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '167bdbdebf9c23a47744843a5dad8d44c86024f713a5233d1564edcfb6191a6d' 
  AND token = 'lFTRaV1XzJJ4B9/4xJ3hmz05+8mxRMLQ2TJA0VV3Gkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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