Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c101d97210a338d4ba90b35c0b230be121ae83568f8c7c502eb2f78098ba18f' 
  AND token = 'IsC+Q4PVsXR0VMLMo6N1hu0jZNHPf9h69ukG34aAfE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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