Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eef6f6675819db44d34bd33e542340bfb924d546be1b882d49236f637b514ca7' 
  AND token = '8xUJwDGnAdYfF5skpx1X2btd6EXng6If20F9+NvRHxY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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