Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '009a392233755ce61f14b0022823e8edf30f802322f047c92736430391a7c261' 
  AND token = 'xZ/N53xJtm0/Nno7f/2USj6/FqoXkBWhRJBS6FpaNKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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