Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67b169f4141bd4370522363cc0ecabb6d1c73c592b2aa0e70e389985ed99be57' 
  AND token = '5Ryje2JUekFeSqwH/1mv6EN/Ifsnjca8+sAoL2CfFlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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