Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b85c867482055d9980b28e8f8ce1b795e15ce4206224055180c7ec3f4a084008' 
  AND token = '+wTY8APkP+Y5Ibo2mdUrry1e9moEXuU87iXEJDi3V18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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