Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '964acfeb89d664694358dd48f848f954272da5f1ad1683dc2e9e699865ca34d0' 
  AND token = 'E3VT2H8AMLfCh1AYPcKRyAcf2gaX8V7Y4sI9IUTknMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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