Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77a5ec633dceef26b13dc15b88bf49b02799223fbfb33a915e4db3d0f41a2d56' 
  AND token = 'ghheSgpqKeySC23rTaLiqkb5h+2XoEimNiPhck3SFFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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