SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '056179efb420f2f4c05829500075d427bfa077ebe631148a6d998076873d37e2' 
  AND token = 'oNy0x8tqDl4jt5bL9YoRDKmzvlsjR1FnOLdd/lKm9Pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00143

JSON explain

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