Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93c62dd61aa48c06bca4d3f283e9cb9cbf8be8302c1e52538660957348225786' 
  AND token = 'GcHWh8SCBbrMmR3PryF+P/0/lzkPYnyoGaJmdxCHji4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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