Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad4a380f704d35b0a9aac11a693bae6e070a76c47d0328451b97ff1612215783' 
  AND token = '6RIbAS1D2KJ3dCWy3tV4csJ6yWve7V2SvxROOP2KnAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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