Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d05991d1ae964ddc784289ac21fa7bdcc7556b9287a5ffe17571957a36019dd' 
  AND token = 'irQ4VYYNdQmLPv8kLgR+gYU1w8BBocGaDhZnCaZ9h8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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