Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00aa18ef4ace87d7261f4d104be0c3604a26b8a7e36a16dbea7de2ae4800673c' 
  AND token = '13n9pjBaGOObLxtvWbio+KajlbggdsSdFT2a8fqanTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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