Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ae00dd3439e2f9fb63d5eeb59c62b632785265776514e482e3eee20f15b3346' 
  AND token = 'c+Vv+LS/+6+rg945py8kMS/Ri2QlAZcVG18aGdjSsL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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