Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06ea7223f54b7837a1effa99d85fe01f08252edf7a49412dee0f886d16a6d570' 
  AND token = '3KMj1UQAGQ0UMaGX2llUlc84HelbRPHEIiilA1ZuayM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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