Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a8dc42a2e14812c730dcdd5e1910212e8141b2132179d2b71da1d176b54161b' 
  AND token = '8R5sL0TQVFptrIbv2d/jUDivHwJaBAgEdbg65pNIEro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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