Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e4e5646727ef16d6141fe26a6e629dc74e12d7f72f91d33a8eda8614d40ecdd' 
  AND token = 'dlfeLXiCCK0iFweknHtvFJQjpvqe/z13XZueUpPHBWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}