Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3ca1b0b68efc866ae1630f4f306a56065f67b76181f8d7e3eda18277aa0f0367' 
  AND token = '/ScmCsCX5+FQfrd8jFCRecn1GCiC6ezsJ01vJdsy7L8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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