Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5532a9a20055dfbe46f7fb50ba442661685e589996cbb46aaff197b344074960' 
  AND token = 'l65/lSHt4e8v2Jt5b+B7G00FbFijlVPpSlCaZSWrrXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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