Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1119b7708e07a0123cee8cd85a342156738d47c967dfa36d2d040047331f9b58' 
  AND token = 'PwrW4OvdInts0f4o11F/EkWbwQ4ZOBVo7Bw1MxaUtI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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