Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcea62b146a60085a1d628b59edd21bb80b69ff98503700a58ee90357b302f1c' 
  AND token = 'QpTrA+y7yD5DfoY111NpFYvDWGJQ593tlmwbf1s1RtY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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