Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dded3ca275ec579fac4b843ca085ac06a8b329fb50760d4e858dd57031030124' 
  AND token = 'xsJmUFXQwSmSwc0/UOpymNPUCut6H0f5gupJWBT+lg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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