Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd58da6962f92f9f36c9d07f045eaf59b1b0c5df23329eaa402b723d3aec130b3' 
  AND token = 'r//Bkdv5CXQE2utTC+mB/tcXKuaFetyqWviqisVfi5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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