Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '058e932a1326291680ec21342108f4482f356337817c75c5f822e5bb09c25ddc' 
  AND token = '/eTL3r/XHhp6pyYK0dW3pJrQUFzQi4nSU+mxV5PlUeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}