Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2394d2d0ec3c4dd3a7800a1ecb6eb786c88a5a82cf67aa52b54d32c9aeafce08' 
  AND token = 'yl5ptprP+kAuAhq2MRRzKM+O5PPq6FkUVvx9ICzkxJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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