Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a628109ff52e90e87a29098621033f127eb1a5a8d00bda7698a014bf44a6c78' 
  AND token = 'D5PsnuAURxL89RH6fXtfjd/ASe0Z/5VOwdRwFAOuezw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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