Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af29951dcfddda3fe0d72fe796c9908770163209df79a84505235d28354758a9' 
  AND token = '6lRIFYmAgkYWUwy89p+7KGrw1wK9ASy80OaqGrTidm4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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