Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8980a33bfb15ce11dd07bc17bab12fc73b6359001990bc582b781c23c7c4fb39' 
  AND token = 'bUxPRGsuQE6AXahADGBsoFwduiay876rv0y0n4ywm1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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